Recoil-brake for wheeled gun-carriages.



0. LAUREE.' RECGIL BRAKE FR WHEBLED'GUN GARRAGE .APPLIUATION FILED SEPT. 1s, 1901.

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Patented nitty so, 1905.

PATENT -Fricn OVO LAUREE, l" ESSEN-ON-'lliE-RUHit-HOLSTERHAUSEN, GERMANY, Afwltliilh T() llltlllll). KRUPP, OF ESSEN-ON-THF-RUHR, GERMANY.

secon-sence Fos WHEELED eunffoensinees.

SPECEFICATON forming peut of Letters Patent N o. 791,347, dated May 30, 1905.

Application filed September 13, 1901. Serin1No.75,295. I

Be it known that l, (Erre LAUnnR, engineer, i

residing at 31'3 (iri'instrnssc, Essen on -the- Ruhr-l lolsterhausen, Germany, have invented certain new and uscinl improvements in Recoil-Brakes for lVheelcd Gun-(Jarriagcs, of which the following isi a specilicntion.

The present invention relates to that class ei wheeled gun-carriages in which the `grunbnrrel recoils relatively to the carriage when the gun is iired. To avoid shocks in such ordnance-either during the recoil or the running-out movement ol thc gun-barrel, which would cause .the carriage to'chnnge its position, the recoil-brake must be so arranged that the gun-bnrrcl can have what is termed a long recoil, the shortest length of which is about twelve times the caliber of the barrel. This, however, involves dillicultics in the construction of the means required to return the barrel to its firing position. mennev employed for this purpose in field-artillery with long barrel-recoil have been either compressed-air or spring recuperator. The former recuperator has the great disadvantage that the nii-cylinder on account of the high initial pressure underwhich the air has to stand is very dillicult to be held air-tight and is therefore extremely liable to fail. With the second kind of rccuperator the diliculties inthe construction of springs for long recoil have not been heretofore surmounted in a satisfactory manner. in order to prevent the nee oi? too long s spring, it has been necessary either to telescope several'springs together (und. even that arrangement extended backward beyond the breech) or to provide menne for decreasing the stroke of the spring. both ceses considerable disadvantages l erise--snch es increased weight of the gun,

diserrengemen'ts through the breakage of one the telescoped springs, complicated con.- strnction of vthe ordnance, lao-sov that the -nieniiold conditions imposed upon a gun in gse in the iield are not fullilled.

The present invention aims to construct a recoil-brakey for wheeled gun-carriages with long; barrel-recoil in which in order to obviete the shove-named diihicnlties lthe recoil The l movement of the barrel is transmitted to the return-spring without reducing the stroke of the returnspring, and the `letter will consist of a single spring-colllimn of comparatively short length. This object is accomplished according to this invention by n helical 'returnspring whose cross-section in the direction of the axis of the` spring has a less'dimension than in the direction perpendicular thereto and which when incased andwith its eppurtenant parts is not longer than the gun-barrel, the spaces between the coils being so great that in tiring the springcan be compressed at least twelve times the caliber of the barrel.

In the accompanying drawing, which illustrates one embodiment of the inventiamo, recoil-brake is shown in longitudinelsecton in which the recoil-springis of rectngular crosssection, 'v v The gun-barrel A is mounted on e slidewu'y or cradle B in a known 'mannen vUnder the slidewny is arranged the cylinder Dof 9. hy-

drauli'c brake, which is of less-length than the barrel and is rigidlyA connected by a screw S to the horn E of the breech of the bsrrel. 'Said screw S engages with the boss d of the brake-cylinder 'D and rests with its head.

against the horn E. The stem C of the brakepiston e is secured 4near the muzzle ofthe barrel atthe front end of the slideway by means of'a removable cap L and remains at rest during the recoil a'nd running-out movement of the barrel, While the brnke-cylindn'l follows the movements of the barrel. .The brakef cylinder is encircled bythe return-spring F, which rests at rear against a iixed abutment G, which. guides the Ineke-cylinder, lend at the frontagninstn collar H of said brnke.. cylinder. The return-spring is of rectangularK vcross-sectionnud consists offsevernl-(in the drawing four) pnl-ts, placed one behind another, whichl are separated from each other by the washers K. As seen in the drawing, the return arrangement-does not extend out j beyond the 'mouth of the barrel when in firing position, nor past the breech of the barrel. The spaces between 'the coils of thefreturnspring: are so proportioned 'that the spring can take upelong recoil-Qi. e., catn be comzsseii :it iai frei. insana bling the 1 wcornpi ing has i lei the, imita-,ir is by cornpressmn 02 the .ninnt 'ii/15h the kanten.

,hereby new gift intov initial mansion t the ne faim-ev.`

nime Ehe insist twelve inxesisiie @a as the en column .w .ma dimm barrel, of :in abutment ixed iativey to the decbion of the of the sipping nl n, ies@ dimension.' than 1n fi ifa-.dini ai umn xiiitii'iia'emn Seezion of the coii En@ direction- G" the? axis of' the` swung, less a; bazifiei I remi# banni, sind abutment fixed relatively@ th mount, and a singje heicniretu-ijn-Spiing ab Sorbin. the entii recoii; having afing less than tiw'iength of' the oni-rei, farmed" in anim-- gi@ coimn Wifril its coi's Ot a-consmecion iena I menig TpiYESSibI-i, L limsi) fweiw L i.

the gun and its mount upon which it recoils, oi e brakingcylinder and its piston, an abutment et the fore ond ofthe braking-cylinder, n ixed abutment at the mount, e helical returnsping of n strength eniieient to absorb the entire reeoii sui'ounrlingthe cylinder ami bearing with its ioze enti agninet the abutment of the cyl inde;- end with its i'enr end against the fixed abutment, the coils of seid spring beingr of greater dimension in n :radial diieetion than in the direction of the exis of the spring and having spaces between them which :aggregate at least weine times the eeiiber oi' the gun, nnfl menne in' the rear of the fixed abutment securing the braking-cylinder and the gun together. y

7. In e. 'recoil-brake, the combination with the gun, and its mount upon which it recoils, of e brekingeylinder and its piston, en abutment in which the brake-Cylinder is guided, n return-Spring surrounding the cylinder and Deering against the abutment, and means in `the rear oi the abutment securing the braking-cylinder and the gun together, and piacing tension upon the spring when the parte are nssennhied.

8. In n recoil-brake, the combination with the gun, and itsI mount upon which it recoils, oi a. brakingeyliner and its piston, an abutment in which the lbrnlize-eyinder is guided, e reinen spying surrounding the cylinder and bearing against the abutment, n horn depend` ing fiorn 'the gun in the fear of the abutment receiving the end of the braking-eylindei, and 2i seiew igidly Securing together' the rear enti oi the cyiindei and the horn of the gun, placing' tension upon the spring when the parte eeeembied.

9. in e i'eeoilbmke2 the combination with the gun, nn its mount upon which it reeoils, of e breite-cylinder provided with a reni' extenhavin g e seeW-thi'eeded opening, an abutment in whichthe brekenylinder is guided, e return-sni-ing Surrounding the eylindex and nearing against the abutment, :thorn depending from the gun in the rear of the cylinder, and having an opening receiving the exten- Witnesses.

GTT@ LAUBER.

1Witnesses:

FRXEDRICH STOCK., WILLIAM Esennwnm sion of the brake-cylinfiel9 and e screw rigidly. 

